> None of this is stuff you learn by spending your teenage years exclusively with siblings (homeschooled) or chilling out playing video games 24/7 with a couple other quiet kids
To be fair, I don’t think anyone learns much that is important by being socially sheltered like you describe. When I advocate homeschooling, that is not what I mean.
Sadly, our culture has lost many of the (adult) social constructs that used to bring people together, leaving school as one of the only viable options for kids to be social with one another. Healthy homeschooling necessarily involves intentionally finding social outlets for kids and teenagers, which is harder than letting school stand in—but, I would argue—is much easier when the adults in the family are pursuing healthy relationships and social outlets with other adults in various walks of life who are raising kids of their own (and I don’t mean at bars, dance clubs, etc.; there are still some non-kid-hostile places where adults and kids can both socialize with peers and be involved in something they enjoy, like churches, volunteering, fishing, hiking, biking, sports, etc.).